Patents by Inventor Christopher D. Marlowe

Christopher D. Marlowe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for preventing valve stem coking
    Patent number: 6874754
    Abstract: An exhaust gas recirculation valve having a reciprocating pintle shaft supported by a sleeve bushing and having a labyrinthine pathway between a valve operating chamber and a shaft/bushing interface to minimize intrusion of exhaust gases into the interface. The labyrinthine pathway is formed between fixed annular elements of the valve body and shaft bushing and a movable annular element of the valve head telescopically disposed between the fixed elements.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: April 5, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Todd P. Geib, Craig D. Smith, Christopher D. Marlowe, Mark A. Reeves, Jerry L. Kelly, Mahoro M. Fujita, Mark S. Lockwood, Paul L. Gluchowski
  • Apparatus for preventing valve stem coking
    Publication number: 20040041115
    Abstract: An exhaust gas recirculation valve having a reciprocating pintle shaft supported by a sleeve bushing and having a labyrinthine pathway between a valve operating chamber and a shaft/bushing interface to minimize intrusion of exhaust gases into the interface. The labyrinthine pathway is formed between fixed annular elements of the valve body and shaft bushing and a movable annular element of the valve head telescopically disposed between the fixed elements.
    Type: Application
    Filed: August 29, 2002
    Publication date: March 4, 2004
    Inventors: Todd P. Geib, Craig D. Smith, Christopher D. Marlowe, Mark A. Reeves, Jerry L. Kelly, Mahoro M. Fujita, Mark S. Lockwood, Paul L. Gluchowski